/*! normalize.css v8.0.0 | MIT License | github.com/necolas/normalize.css */


/* Document
   ========================================================================== */


/**
 * 1. 修正所有浏览器中的行高.
 * 2. 在iOS的切换横竖屏时，防止字体大小的调整.
 */

html {
    /* line-height: 1.15; */
    /* 1 */
    -webkit-text-size-adjust: 100%;
    /* 2 */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


/* Sections
     ========================================================================== */


/**
   * 删除所有浏览器的margin值。
   */

body {
    margin: 0;
}


/**
   * Correct the font size and margin on `h1` elements within `section` and
   * `article` contexts in Chrome, Firefox, and Safari.
   * 修正h1元素的font-size和margin值
   */

h1 {
    font-size: 2em;
    margin: 0.67em 0;
}


/* Grouping content
     ========================================================================== */


/**
   * 1. Add the correct box sizing in Firefox.
   * 2. Show the overflow in Edge and IE.
   * 1.修正火狐浏览器的box-sizing
   */

hr {
    box-sizing: content-box;
    /* 1 */
    height: 0;
    /* 1 */
    overflow: visible;
    /* 2 */
}


/**
   * 1. Correct the inheritance and scaling of font size in all browsers.
   * 1. 在所有浏览器中纠正字体大小的继承和扩展。
   * 2. Correct the odd `em` font sizing in all browsers.
   * 2. 在所有浏览器中纠正奇数的字体大小。
   */

pre {
    font-family: monospace, monospace;
    /* 1 */
    font-size: 1em;
    /* 2 */
}


/* Text-level semantics：文本级别的语义
     ========================================================================== */


/**
   * Remove the gray background on active links in IE 10.
   * 删除IE 10中活跃链接的灰色背景。
   */

a {
    background-color: transparent;
}


/**
   * 1. Remove the bottom border in Chrome 57-
   * 1. 移除Chrome 57-浏览器的border-bottom
   * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
   * 2. 在Chrome、Edge、IE、Opera和Safari中添加正确的text-decoration。
   */

abbr[title] {
    border-bottom: none;
    /* 1 */
    text-decoration: underline;
    /* 2 */
    text-decoration: underline dotted;
    /* 2 */
}


/**
   * Add the correct font weight in Chrome, Edge, and Safari.
   * 在Chrome、Edge和Safari中添加正确的font-weight
   */

b,
strong {
    font-weight: bolder;
}


/**
   * 1. Correct the inheritance and scaling of font size in all browsers.
   * 1.在所有浏览器中纠正字体大小的继承和扩展。
   * 2. Correct the odd `em` font sizing in all browsers.
   */

code,
kbd,
samp {
    font-family: monospace, monospace;
    /* 1 */
    font-size: 1em;
    /* 2 */
}


/**
   * Add the correct font size in all browsers.
   */

small {
    font-size: 80%;
}


/**
   * Prevent `sub` and `sup` elements from affecting the line height in
   * all browsers.
   * 防止“sub”和“sup”元素影响所有浏览器的线高度。
   */

sub,
sup {
    font-size: 75%;
    line-height: 0;
    position: relative;
    vertical-align: baseline;
}

sub {
    bottom: -0.25em;
}

sup {
    top: -0.5em;
}


/* Embedded content：嵌入命令
     ========================================================================== */


/**
   * Remove the border on images inside links in IE 10.
   */

img {
    border-style: none;
    width: 100%;
    vertical-align: middle;
}


/* Forms
     ========================================================================== */


/**
   * 1. Change the font styles in all browsers.
   * 2. Remove the margin in Firefox and Safari.
   */

button,
input,
optgroup,
select,
textarea {
    font-family: inherit;
    /* 1 */
    font-size: 100%;
    /* 1 */
    line-height: 1.15;
    /* 1 */
    margin: 0;
    /* 2 */
}


/**
   * Show the overflow in IE.
   * 1. Show the overflow in Edge.
   */

button,
input {
    /* 1 */
    overflow: visible;
}


/**
   * Remove the inheritance of text transform in Edge, Firefox, and IE.
   * 在Edge、Firefox和IE中删除文本转换的继承。
   * 1. Remove the inheritance of text transform in Firefox.
   * 1. 删除Firefox中文本转换的继承。
   */

button,
select {
    /* 1 */
    text-transform: none;
}


/**
   * Correct the inability to style clickable types in iOS and Safari.
   * 纠正在iOS和Safari中无法使用可点击类型的功能。
   */

button,
[type="button"],
[type="reset"],
[type="submit"] {
    -webkit-appearance: button;
}


/**
   * Remove the inner border and padding in Firefox.
   * 移除Firefox中border和padding
   */

button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
    border-style: none;
    padding: 0;
}


/**
   * Restore the focus styles unset by the previous rule.
   * 恢复以前规则未设置的焦点样式。
   */

button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
    outline: 1px dotted ButtonText;
}


/**
   * Correct the padding in Firefox.
   * 修正火狐的padding值
   */

fieldset {
    padding: 0.35em 0.75em 0.625em;
}


/**
   * 1. Correct the text wrapping in Edge and IE.
   * 1. 
   * 2. Correct the color inheritance from `fieldset` elements in IE.
   * 2. 从IE的“fieldset”元素中纠正颜色继承。
   * 3. Remove the padding so developers are not caught out when they zero out
   *    `fieldset` elements in all browsers.
   * 3.
   */

legend {
    box-sizing: border-box;
    /* 1 */
    color: inherit;
    /* 2 */
    display: table;
    /* 1 */
    max-width: 100%;
    /* 1 */
    padding: 0;
    /* 3 */
    white-space: normal;
    /* 1 */
}


/**
   * Add the correct vertical alignment in Chrome, Firefox, and Opera.
   * 在Chrome、Firefox和Opera中添加正确的垂直对齐方式。
   */

progress {
    vertical-align: baseline;
}


/**
   * Remove the default vertical scrollbar in IE 10+.
   * 删除IE 10+中的默认垂直滚动条
   */

textarea {
    overflow: auto;
}


/**
   * 1. Add the correct box sizing in IE 10.
   * 1. 修正IE10中的box-sizing
   * 2. Remove the padding in IE 10.
   * 2. 移除IE10的padding值
   */

[type="checkbox"],
[type="radio"] {
    box-sizing: border-box;
    /* 1 */
    padding: 0;
    /* 2 */
}


/**
   * Correct the cursor style of increment and decrement buttons in Chrome.
   * 修正Chrome中增加和减量按钮的光标样式。
   */

[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
    height: auto;
}


/**
   * 1. Correct the odd appearance in Chrome and Safari.
   * 1. 修正在Chrome和Safari中出现的奇怪现象。
   * 2. Correct the outline style in Safari.
   * 2. 修正Safari中的outline样式
   */

[type="search"] {
    -webkit-appearance: textfield;
    /* 1 */
    outline-offset: -2px;
    /* 2 */
}


/**
   * Remove the inner padding in Chrome and Safari on macOS.
   * 移除chrome和macos上的Safari的padding值
   */

[type="search"]::-webkit-search-decoration {
    -webkit-appearance: none;
}


/**
   * 1. Correct the inability to style clickable types in iOS and Safari.
   * 1. 纠正在iOS和Safari中无法使用可点击类型的功能。
   * 2. Change font properties to `inherit` in Safari.
   * 2. 在Safari中更改字体属性，以“inherit”。
   */

 ::-webkit-file-upload-button {
    -webkit-appearance: button;
    /* 1 */
    font: inherit;
    /* 2 */
}


/* Interactive：交互式的
     ========================================================================== */


/*
   * Add the correct display in Edge, IE 10+, and Firefox.
   * 修正Edge, IE 10+,和 Firefox中details标签的display属性
   */

details {
    display: block;
}


/*
   * Add the correct display in all browsers.
   * 修正所有浏览器的display属性
   */

summary {
    display: list-item;
}


/* Misc
     ========================================================================== */


/**
   * Add the correct display in IE 10+.
   * 修正IE10+的template元素的display
   */

template {
    display: none;
}


/**
   * Add the correct display in IE 10.
   * 修正IE 10中的display
   */

[hidden] {
    display: none;
}


/* 点击高亮我们需要清除，设置为transparent 完成透明 */

a {
    -webkit-tap-highlight-color: transparent;
    text-decoration: none;
    color: #000;
}


/* 在移动端浏览器默认的外观在IOS上加上这个属性才能给按钮输入框自定义样式 */

input {
    -webkit-appearance: none;
    border: none;
}


/* 禁用常按页面时的弹出菜单 */

img,
a {
    -webkit-touch-callout: none;
}


/* 去掉li默认样式 */

li {
    list-style: none;
}

.clearfix::after {
    content: '';
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}

.clearfix {
    *zoom: 1;
}


/* 文本多余部分隐藏 */

.text_off {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.text_cut {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}


/* 配置主流屏幕的html字体大小 */

html {
    font-size: 50px;
}

@media screen and (min-width: 750px) {
    html {
        font-size: 50px!important;
    }
}

@media screen and (min-width: 320px) {
    html {
        font-size: 21.33333px;
    }
}

@media screen and (min-width: 360px) {
    html {
        font-size: 24px;
    }
}

@media screen and (min-width:375px) {
    html {
        font-size: 25px;
    }
}

@media screen and (min-width:400px) {
    html {
        font-size: 26.66666667px;
    }
}

@media screen and (min-width:414px) {
    html {
        font-size: 27.6px;
    }
}

@media screen and (min-width:424px) {
    html {
        font-size: 28.26666667px;
    }
}

@media screen and (min-width:480px) {
    html {
        font-size: 32px;
    }
}

@media screen and (min-width:540px) {
    html {
        font-size: 36px;
    }
}

@media screen and (min-width:720px) {
    html {
        font-size: 48px;
    }
}

@media screen and (min-width:750px) {
    html {
        font-size: 50px;
    }
}